Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
Female student wearing face protective medical mask for virus protection at lecture hall
a male caucasian person sitting and feeling tired in the lecture hall auditorium, overworking stress
Female student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Male student wearing face protective medical mask for virus protection at lecture hall
Female instructor wearing face protective mask and helping male student at lecture hall
Young woman learning while attending adult education training class in lecture hall
Black senior man giving a presentation during education training class in lecture hall.
Male student holding pen and writing in notebook while checking smartwatch at lecture hall desk
Female student sitting at lecture hall desk resting chin on hand studying with papers and laptop
Young black woman writing in notebook while e-learning on laptop in lecture hall.
Black teacher talking to adult students during education training class in lecture hall.
Mature man raising hand to ask a question while attending a class in lecture hall.
Working female student taking notes on notebook at university lecture hall desk, using laptop
Black senior man communicating with female classmate during educational class in lecture hall.
high angle view of attractive lecturer standing at podium tribune during seminar in conference hall
Asian female student writing notes with pen in notebook at lecture hall desk with pink binder
Male speaker gesturing at acrylic lectern with microphone, paper near award shelf at lecture hall
Black female student taking notes while learning during a class at lecture hall.
Black adult education teacher talking to senior woman during a course in lecture hall.
cropped image of lecturer showing okay gesture at podium tribune during seminar in conference hall
Happy mature teacher talking to his students while holding a presentation in lecture hall.
Female student wearing face protective medical mask for virus protection standing at lecture hall
Female student wearing face protective medical mask for virus protection standing at lecture hall
Teenage girl sitting at tiered college lecture hall desk, with pen and open textbooks and notebooks
